Arroyo
8.0#1 in stream processing softwareFrom $5 a monthFree planWebAPILinuxmacOS
VisitArroyo vs Esper
What both publish
| Fact | Arroyo | Esper |
|---|---|---|
| Company legal name | Crunchbase identifies the company legal name as Arroyo Systems, Inc. | The maker identifies itself as EsperTech Inc. |
| Founded | 2022 | Esper is documented as created in 2006, with its first public release in early 2006. |
| Kafka integration | Kafka sources and sinks support self-hosted Kafka, Amazon MSK and Confluent Cloud, with exactly-once or at-least-once sink modes. | EsperIO includes Kafka input and output adapters, while Enterprise Edition uses Kafka in its distributed architecture. |
| Licence | The official documentation states that Arroyo is fully open source under the Apache 2.0 licence. | The open-source Esper and NEsper code is released under the GNU GPL version 2. |
| Purpose | Arroyo is a distributed stream processing engine for stateful computations on data streams, with sub-second results. | Esper is a language, compiler and runtime for complex event processing and streaming analytics, available for Java and .NET. |
Arroyo plans
- Arroyo open-sourceFree
- Open-source Arroyo EngineFree
- Cloudflare Workers Paid with Pipelines$5 a month
Esper plans
- Esper 9.0.0Free
- Esper Open SourceFree
- Esper Enterprise EditionPriced on request
- EsperHAPriced on request
- Esper supportPriced on request
Pick Arroyo if…
Arroyo suits teams building stateful stream-processing pipelines with SQL and Rust extensions. A single-node cluster is intended for testing and development; production calls for a distributed deployment.
Pick Esper if…
Esper may suit Java or .NET developers building event-processing applications that can embed a runtime in their processes. Its listed use cases include monitoring, financial applications, and sensor networks.